Installing from github resulting in System command Rcmd.exe failed - still a problem

This is still a persistent error. I'm trying out learnr tutorials with gradethis in my class and a quarter of the students can't install the tutorials on their computer because of this error.

[ref] How to resolve install_github fails with error System command 'Rcmd.exe' failed, exit status: 1, stdout + stderr?

Has there been any progress on a solution?

This comment by bulloa1 in their follow up post

Update: In my case at least, I have narrowed down that any packages that need to build from a tar.gz (source) fail but not with a .zip (binary). It is able to download the tar.gz and save it to the temporary location, but it fails at the next step. Not sure, if you've found a solution, but I'll let you know if I do.

seems to point to an issue specifically with packages downloaded as tar.gz. That hints that maybe these issues might be relevant?

Another option that might be helpful for installing the dev version of learnr is to use

# Enable universe(s) by rstudio
options(repos = c(
  rstudio = '',
  CRAN = ''


Beyond that I think that any additional context you could provide would increase the likelihood that someone will be able to diagnose the issue or help.

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